- 1. [Amps] L-4B Issue (score: 1)
- Author: "Edwin Karl" <edk0kl@centurytel.net>
- Date: Sun, 21 Dec 2008 14:40:51 -0600
- I am rebuilding the power supply on a pal's L-4B and am stumped at a problem that has developed. Original symptom was no high voltage. Looked like the fuse resistor had opened in the supply. So I fel
- /archives//html/Amps/2008-12/msg00282.html (7,909 bytes)
- 2. Re: [Amps] L-4B Issue (score: 1)
- Author: Mel <itz_da_police@yahoo.com>
- Date: Tue, 23 Dec 2008 08:22:00 -0800 (PST)
- Updates, did you find the cause? Mel KO0M I am rebuilding the power supply on a pal's L-4B and am stumped at a problem that has developed. Original symptom was no high voltage. Looked like the
- /archives//html/Amps/2008-12/msg00306.html (9,150 bytes)
- 3. Re: [Amps] L-4B Issue (score: 1)
- Author: Mel <itz_da_police@yahoo.com>
- Date: Thu, 25 Dec 2008 14:09:36 -0800 (PST)
- Hey Ed, I have given it a little thought but, before I kinda had to make some presumptions; the .82 ohm resistor was open which usually signals a problem starting in the RF section with too much cu
- /archives//html/Amps/2008-12/msg00331.html (12,462 bytes)
- 4. Re: [Amps] L-4B Issue (score: 1)
- Author: "Edwin Karl" <edk0kl@centurytel.net>
- Date: Thu, 25 Dec 2008 22:47:55 -0600
- Mel Thanks for the input. I was energized to look into the amplifier instead of focusing on the power supply. The problem turned out to be R8 a 1 ohm 10 watt resistor from B- to ground. The grid mete
- /archives//html/Amps/2008-12/msg00337.html (13,843 bytes)
- 5. Re: [Amps] L-4B Issue (score: 1)
- Author: Russ Williams <hrd998cc@yahoo.com>
- Date: Fri, 26 Dec 2008 17:43:02 -0800 (PST)
- I replaced my resistors because I didn't like the excess heat generated. I built a separate power supply that just fits inside the Drake P/S. Works a treat!! Russ W6OHM ______________________________
- /archives//html/Amps/2008-12/msg00342.html (18,258 bytes)
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